And there is a reason for that. It took just six days to build the Ark Hotel in Changsha, China. According to the video, no stationary cranes were used in construction and there wasn't single injury among the site's workers.
The 15-story sustainable hotel already had its foundation but using pre-fabricated columns and modules as well as modern construction techniques, construction workers took just 46 hours to finish the main structural components and another 90 hours to finish the building enclosure.
If we believe the sources on the internet, this hotel construction caused only 1% material waste as compared to the building industry average of 10% for in-place steel and concrete construction. Clearly, this well planned, coordinated and executed project sets a perfect example for lean construction community and for the construction industry as a whole to understand the value of eliminating waste from the projects.